NFL owners approve proposal to allow players to wear No. 0
2021 N.F.L. Rule Changes: A Viewer's Guide - The New York Times
NFL Rules Changes: New England Patriots 'Agent Zero'? - Sports Illustrated New England Patriots News, Analysis and More
Cowboys' Micah Parsons teases jersey-number change, upsets NFL fans
NFL Approves Rule Change Allowing More Jersey Numbers For Certain Positions - CBS Boston
NFL jersey number updates: Tracking which NFL players wear No. 0 - ESPN
NFL rule change finally clears the way for Patriots throwback jerseys - Pats Pulpit
The NFL's new single-digit jerseys are inspiring excitement and a little grumbling - The Washington Post
NFL players can now wear No. 0 among rule changes